for a constant control of the set nominal value as proportional regulator working without auxiliary energy. Infinitely adjustable nominal value of 250 - 600 mbar. Nominal value can be locked and read off from the outside at any time. With direct isolation and draining and filling device. Installation the return pipe. Straight pattern model with soft seal.

Valve body, bonnet and regulator housing made of brass, inner parts made of brass resistant to dezincification (DZR). O-rings and diaphragm made of EPDM.

With integrated pressure test points and drain valves as well as insulation shells.